 That was Democrat operative Ben Rhodes' reaction last night to the debate. The trouble is, that's precisely what the strategy has been for months. There were notable exceptions. Ezra Klein published a huge piece in the New York Times in February making the case that Biden should step down. James Carville's been telling that truth, too. Representative Dean Phillips entered the Democrat presidential primary this year. His campaign was based on the same observation that Biden was too old for the job. But last night...